This column argues that asset purchases and forward guidance by central banks can be effective in reducing financial market participants’ tail-risk perceptions. US data suggest that, since their inception in 2008, the unconventional policies adopted by the Federal Reserve have significantly compressed perceptions of tail risk. Despite increases in risk premia during the recent ‘tapering’ episode, estimates of tail-risk perceptions still remain significantly below the levels observed when the measures were introduced. Still, the effects of exit on tail-risk perceptions remain uncertain, and will require careful monitoring.